OWL AND HORSESHOE (AKA) by Atterbury & Company (Pittsburgh-PA, Company Operated: 1850's-1900), c1880s Introduced
Possibly Atterbury, the handles match with the Eastlake mug and found in several colors.
NOTE: Ref: Pattern Glass Mugs, by Mordock & Adams, pg 18.
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Shape:
Contributor:

Shape: Cups & Mugs
Contributor: Gene Serbus (1,2), Liz Roach (3,4)